COST OF RELOCATING OR ALTERING PROPERTY.

(a) In this section, the term "sole expense" means the actual cost of the relocation, raising, lowering, rerouting, or change in grade or alteration of construction under Subsection (b) to provide a comparable replacement without enhancing the facility, after deducting the net salvage value derived from the old facility.

(b) If the authority's exercise of eminent domain, relocation, or another power conferred by this chapter makes necessary relocating, raising, rerouting, changing the grade of, or altering the construction of any highway, railroad, electric transmission line, telephone or telegraph property and facility, or pipeline, the action shall be accomplished at the sole expense of the authority.